Electroplating is a process of coating a metal on another metal or non-metal surface. In the electroplating process, cadmium is often used as a coating material. Cadmium coating has the following advantages:
Author: Anna
Electroplating is a process of coating a metal on another metal or non-metal surface. In the electroplating process, cadmium is often used as a coating material. Cadmium coating has the following advantages:
1. Good corrosion resistance: cadmium coating can prevent the metal surface from oxidation, corrosion and other effects, thereby extending the service life of the material.
2. Excellent electrical conductivity: cadmium conductivity is very good, so the use of cadmium coating can improve the electrical conductivity of metals.
3. Easy to process: cadmium coating can improve the surface hardness of the material, and easy to process, you can improve the mechanical properties of the material to a certain extent.
Although cadmium coating has many advantages, but the use of cadmium also has some problems. The following are the effects of cadmium on the environment and human health:
1. Environmental pollution: Cadmium is a toxic metal, if improperly handled will cause pollution to the environment, affecting people's health and quality of life.
2. Human health impacts: Cadmium is a toxic metal, if the human body inhaled or exposed to excessive cadmium will cause poisoning, resulting in diarrhea, vomiting, headache, pneumonia and other symptoms.
In order to reduce the impact of cadmium on the environment and human health, some countries have begun to look for alternatives to cadmium. For example, some manufacturers have begun to use zinc or zinc alloy instead of cadmium coating. In addition, some green plating process has also begun to use other materials, such as copper, nickel, etc. to replace cadmium.
In short, the use of cadmium in the plating process is to increase the corrosion resistance and electrical conductivity of the material. However, the toxicity of cadmium can not be ignored. Therefore, the search for more environmentally friendly and healthy alternatives is the trend of future development.